<div class="g-collapse" #collapse [class.close]="!show">
  <button ion-button class="title" clear full (click)="toggle()" #title>
    {{ defaultTitle }}
    <ion-icon name="ios-arrow-down" [class.up]="show"></ion-icon>
  </button>
  <div class="content" #content>
    <ng-content></ng-content>
  </div>
</div>
